package com.tanger.common.utils;

import com.tanger.common.files.FilesConfig;
import com.tanger.common.files.FilesObject;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import org.apache.commons.lang3.StringUtils;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.util.Hashtable;


/**
 * 生成二维码工具类
 * 2022-08-01
 */  
public class QRCodeUtil {  
  
    private static final String CHARSET = "utf-8";  
    
    private static final int QRCODE_SIZE = 400;  
 
    private static final int WIDTH = 60;  

    private static final int HEIGHT = 60;

    /**
     * 生成二维码
     * @param content
     * @param imgPath
     * @param needCompress
     * @return
     * @throws Exception
     */
    private static BufferedImage createImage(String content, String imgPath, boolean needCompress) throws Exception {
        Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();  
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);  
        hints.put(EncodeHintType.CHARACTER_SET, CHARSET);  
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,  
                BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);  
        int width = bitMatrix.getWidth();  
        int height = bitMatrix.getHeight();  
        BufferedImage image = new BufferedImage(width, height,  
                BufferedImage.TYPE_INT_RGB);  
        for (int x = 0; x < width; x++) {  
            for (int y = 0; y < height; y++) {  
                image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
            }  
        }  
        if (imgPath == null || "".equals(imgPath)) {  
            return image;  
        }  
        QRCodeUtil.insertImage(image, imgPath, needCompress);  
        return image;  
    }  
  
    /**
     * 将logo图写入二维码
     * @param source
     * @param imgPath
     * @param needCompress
     * @throws Exception
     */
    private static void insertImage(BufferedImage source, String imgPath, boolean needCompress) throws Exception {
    		Image src = null;
    	if(StringUtils.isBlank(imgPath)){
    		src = ImageIO.read(LoadConfig.class.getResourceAsStream("images/logo.jpg"));
    	}else{
    		src = ImageIO.read(LoadConfig.class.getResourceAsStream(imgPath));
    	}
        
        int width = src.getWidth(null);  
        int height = src.getHeight(null);  
        if (needCompress) { 
            if (width > WIDTH) {  
                width = WIDTH;  
            }  
            if (height > HEIGHT) {  
                height = HEIGHT;  
            }  
            Image image = src.getScaledInstance(width, height,  
                    Image.SCALE_SMOOTH);  
            BufferedImage tag = new BufferedImage(width, height,  
                    BufferedImage.TYPE_INT_RGB);  
            Graphics g = tag.getGraphics();  
            g.drawImage(image, 0, 0, null);
            g.dispose();  
            src = image;  
        }  

        Graphics2D graph = source.createGraphics();  
        int x = (QRCODE_SIZE - width) / 2;  
        int y = (QRCODE_SIZE - height) / 2;  
        graph.drawImage(src, x, y, width, height, null);  
        Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);  
        graph.setStroke(new BasicStroke(3f));  
        graph.draw(shape);  
        graph.dispose();  
    }  
  
 
     /**
      *  生成二维码并上传（oss）
      * @param content
      * @param needCompress
      * @return
      * @throws Exception
      */
     public static String generateQRcode(String content, boolean needCompress,String logImage) throws Exception {
//    	  BufferedImage image = QRCodeUtil.createImage(content, "/"+logImage, needCompress);
         BufferedImage image = QRCodeUtil.createImage(content, null, needCompress);
         String fileName = new FilesObject().uploadCode(image,".jpg");
         return FilesConfig.serverUrl+FilesConfig.dir+fileName;
     }



    public static void main(String[] args) {
        try {
            System.out.println(generateQRcode("http://xcxh.test.com/upload/gistory/inviterId=123456", true,null));
        } catch (Exception e) {

        }

    }
}  
 